- #1
Gamegoofs2
- 3
- 0
I'm having trouble with adding two-dimensional motion. Here's an example of the type of problem I'm having trouble with:
A map gives you the following directions:
Travel 45 mintues at a speed of 1.2 m/sec and a heading of 45 degrees. Turn to a heading of 330 degrees and travel at the same speed for 32 minutes.
What will your displacement be if you follow these directions?
I was taught to use this equation:
\Deltax = initial velocity * time + 1/2 * acceleration * time^2
and
Ax= initial velocity * cos()
Ay= initial velocity * sin()
and the same for the the second vector.
I started out with trying to find the first vector or vector A as I called it.
\Deltax= 1.2 m/sec(2700 sec) + 1/2 (0)(2700 sec)^2
and got \Deltax=3240m which I thought was a bit high, so I don't know if I'm doing something wrong or if it should really be that high.
A map gives you the following directions:
Travel 45 mintues at a speed of 1.2 m/sec and a heading of 45 degrees. Turn to a heading of 330 degrees and travel at the same speed for 32 minutes.
What will your displacement be if you follow these directions?
I was taught to use this equation:
\Deltax = initial velocity * time + 1/2 * acceleration * time^2
and
Ax= initial velocity * cos()
Ay= initial velocity * sin()
and the same for the the second vector.
I started out with trying to find the first vector or vector A as I called it.
\Deltax= 1.2 m/sec(2700 sec) + 1/2 (0)(2700 sec)^2
and got \Deltax=3240m which I thought was a bit high, so I don't know if I'm doing something wrong or if it should really be that high.
)
